Improvement in harrows



J. G. MCCAULEY.

Harrow.

No. 11,614. Patented Aug. 29. 1854.

AM. PHDTO'UTHO. C0 NY. (OSBORNE'S PROCESS.)

UNITED STATES PATENT OFFICE.

JOHN G. MCOAULEY, ()F STONE BRIDGE, VIRGINIA.

IMPROVEMENT IN HARROWS.

Specification forming part of Letters Patent No. 11,614, dated August 29, 1854.

. accompanying drawings, and to the letters of reference marked thereon.

The nature of my invention consists in having the teeth double and attached to the beam by means of a band and key.

To enable others skilled in the art to make and use my invention, I will proceed to describe its construction and operation.

Myimprovementis applicable to barrows of any of the known forms. The double tooth is formed by bending a bar of sufficient size in the center to a right or somewhat less angle, it desired. Each tooth is about eight inches long from the bend and tapered toward the ends to a point. One branch of the tooth fits against the bottom of the beam and the other extends or falls perpendicular and into the ground. \Vhen worn thctooth may be changed,

and a sharp unworu tooth presented. The double tooth thus described is shown atAA. The band,as shown at B,is made of a strap ofiron about two and a half inches wide and a quarterof an inch thick,of such length and dimensions as to embrace closely the tooth, the beam, and the key. 0 is the beam, (or an illustrative portion of a beam,) which is about one inch and a quarterin diameter, and is square or flat, as may be desired. D is the key, which should correspond in thickness and taper with the band and beam and be about five inches long. Having thus described myinvention and its operation, what I claim as my invention, and desire to secure by Letters Patent, ir-- The constructing the double tooth so that one portion may operate on the ground and the other he in reserve, and also serve as a shank to confine the tooth to the beam in connection with the band and key, substantially as set forth.

J. G. MoOAULEY. Witnesses JOHN Dow, HIRAM P. EVANS. 

